C / C++ / MFC

15-Jul-10 0:33

Hi Have created a Editbox derived from CEdit and a spin control. The editbox is attached with Spin control. There should be time value in Edit box and the value (hr ,min ,AM/PM) should increase or decrease according to up and Down arrow of the spin control. Can anyone plese help me how to increse or deecrease the particular selection using spin control.

any help is appriciated..

Thanks..

Naveen15-Jul-10 1:37

15-Jul-10 1:37

Why dont you use the DateTimeControl instead of edit box?

nave

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AbhiHcl15-Jul-10 2:00

15-Jul-10 2:00

I need to customiza the control. There will be some image on up and down arrow of the spin control and also some gradient effect shud be there in edit box.
Is these thigs are possibe in datetimeControl ? if ys then please guide me hw to do ?
Thanks..

Naveen15-Jul-10 2:08

15-Jul-10 2:08

AbhiHcl wrote:
There will be some image on up and down arrow of the spin control

If you have customised a normal spin control, you can customise, the spin in the Date time picker also. The spin control is actually a child of the Date time picker and you can get the handle of that spin control like HWND hSpin = GetWindow( hDateTimerPicker, GW_CHILD ); . Then you can subclass it.

AbhiHcl wrote:
and also some gradient effect shud be there in edit box.

How did you plan to do that? Try the same will work in Date time picker also..

nave

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AbhiHcl15-Jul-10 2:33

15-Jul-10 2:33

GetWindow() takes only one parameter as HWnd. I m not clear how to proceed..

Can u plz send me some sample code..plzzz...

Naveen15-Jul-10 2:40

15-Jul-10 2:40

AbhiHcl wrote:
GetWindow() takes only one parameter as HWnd. I m not clear how to proceed..

try putting :: infront of it Wink | ;)

. ::GetWindow(...)

Sorry I dont have a sample for that now...

nave

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Member 392263915-Jul-10 2:12

Member 3922639

15-Jul-10 2:12

To get the text portion currently selected?
See CEdit::GetSel.

AbhiHcl15-Jul-10 2:36

15-Jul-10 2:36

CEdit::GetSel() return DWORD. and I am not sure how to convert the value as string and then iin int. bcoz I need to increment and decrement that value, what ever is selected.
Could u plz help me out for this logic.

Richard MacCutchan15-Jul-10 4:26

Richard MacCutchan

15-Jul-10 4:26

You should make greater use of the MSDN documentation. This page[^] explains the values in the DWORD and how they may be used to get the specific characters of your edit string.

It's time for a new signature.

First Chance Exception

Pryabu14-Jul-10 23:58

Pryabu

14-Jul-10 23:58

Hi,

Im getting the following error while closing handle using CloseHandle() function. Can anyone please tell how to resolve this issue?

First Chance Exception in test.exe(NTDLL.DLL):0xC0000008: Invalid Handle

Thanks,

Cedric Moonen15-Jul-10 0:08

Cedric Moonen

15-Jul-10 0:08

The error message is pretty clear no ? You are passing an invalid handle to the CloseHandle function. Use your debugger inspect what might be wrong.

Cédric Moonen
Software developer

Charting control [v3.0]
OpenGL game tutorial in C++

Pryabu15-Jul-10 0:16

Pryabu

15-Jul-10 0:16

no.In that folder,im having a image file and Using FindFirstFile function i got handle for that image file. After trying to close that handle the application is getting crashed and it is showing this error.

wsprintf(szSearchFolder,"%s\\*.jpg","C:\\test");

hSearch = FindFirstFile (szSearchFolder, &Foldername);

if (hSearch == INVALID_HANDLE_VALUE)
{
return ERR_FAILED;
}

CloseHandle(hSearch);

Naveen15-Jul-10 1:35

15-Jul-10 1:35

Karthika85 wrote:
CloseHandle(hSearch);

This is wrong. You should use FindClose() function to close the handle retured by FindFirstFile()

nave

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Aescleal15-Jul-10 0:26

Aescleal

15-Jul-10 0:26

As Cedric said, you're passing an invalid handle to the function. Just because the value of the handle isn't INVALID_HANDLE_VALUE it doesn't mean the handle is valid. For example you might...

- be using a handle someone else has already closed
- you're using something uninitialised that contains some rubbish off the stack
- you're overwriting the variable containing the HANDLE value with a wild pointer write
- be doing something really perverse like HANDLE h( reinterpret_cast<HANDLE>( std::rand() ) );

So there's loads of ways a HANDLE can be invalid and not have a value of INVALID_HANDLE_VALUE.

Cheers,

Ash

Pryabu15-Jul-10 1:03

Pryabu

15-Jul-10 1:03

I have intialized the handle value to NULL in the declaration.

HANDLE hSearch = NULL;

Set a timeout for UrlDownloadToFile() ? [modified]

Niklas L15-Jul-10 0:34

Niklas L

15-Jul-10 0:34

How about using FindClose()[^] as the documentation suggests instead of CloseHandle()?

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ALLERSLIT14-Jul-10 23:50

ALLERSLIT

14-Jul-10 23:50

Hey, well if the webserver hangs or something urldownloadtofile will keep trying to connect and somewhat hang there forever.
So iam in a need of a way to set a timeout for it, so itll stop executing after a set amount of time.
Maybe you guys have any idea how i could realise that?

And yes i do know winsock/wininet etc would be better but iam trying to learn my way up with easier functions for now Smile | :)

.
Thanks

modified on Thursday, July 15, 2010 5:57 AM

Niklas L15-Jul-10 0:43

Niklas L

15-Jul-10 0:43

Have you tried using the callback (last parameter) and return E_ABORT? That should probably be sufficient for you.

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ALLERSLIT15-Jul-10 0:47

ALLERSLIT

15-Jul-10 0:47

Well the program is stuck because the function URLDownloadToFile() wont stop executing if the destinationserver hangs so i cant do anything.

Niklas L15-Jul-10 0:52

Niklas L

15-Jul-10 0:52

Once more: Have you tried what I suggested?

Here's a crazy thought: what if the callback is called back from the function repeatedly to allow you to monitor progress? And what if returning E_ABORT from that function will terminate the download attempt?

I know it's crazy, but you're allowed to be a little crazy on Thursdays.

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